Clutch.



H. w. WINTBR.

' CLUTCH.

APPLIOATIOR FILED MAY 14, 1909.

. Patented Jan. 10, 1911..

arm n non.

HENRY W. WINTER, OF METHUEN, MASSACHUSETTS, ASSIGNOR TO UNITED SHQE MACHINERY COMPANY, OF.PATERSON, NEW JERSEY, A CORPORATEON (3F NE'W JERSEY.

CLUTCH.

senses.

Specification of Letters Patent. Patented Jan, 111}, 1911,,

Original application filed September 28, 1908, Serial No. 455,113. Divided and this application filed any 14, 1909. Serial No. 495,849. I

To alt whom it may concern:

Be it known that l, HENRY N. V INTER,

a citizen of the United States, residing at Methuen, in the county of Essex and State of Massachusetts, have invented certain Improvements in Clutches, of which the follow-- ing description, in connection with the accom nanvin drawin s is a s aecificatio'n like reference clniracters on the drawings indicating like parts in the several figures.

This invention relates to clutch mechanisms and more particularly to a mechanism which is primarily adapted for use in machines for operating upon shoe soles such, for example, as that shown in my application for United States Letters Patent No. 455,113, filed Sept. 28, 1908, the present application being a division of the above mentioned application.

hiachines for performing various specific operations upon soles are in use in which the marginal part of a sole is advanced by feeding mechanism against a tool for performing the desired operation. in machlnes of this class it is desirable that provision be made for varying the speed at which'the feeding mechanism is operated. For example, in operating upon a sole along such an abrupt curve as occurs at the toe, an operator can. do better work if the feeding mechanism is adapted to advance the sole against the tool at a speed slower than that at which it is customary to feed the sole while operating upon its more nearly straight marginal portions.

An object of the present invention is to provide an in'iproved clutch mechanism the use of Which in a machine of the above class will enable the operator to control accurately the speed of operation of the feeding mechanism.

To this end the present invention comprises the improved clutch mechanism hereinafter described and claimed.

In the drawings,-l*igure l is a view in side elevation of a portion of a channeling machine provided with a clutch mechanism embodying the present invention; Fig. 2 is a detail View, partly in section, of the clutch mechanism shown in Fig. 1.

Referring to the drawings, 2 indicates a driving shaft, journaled in a frame 4, which may be arranged to operate the feeding mechanism of the machine by means of suitable gears such as shown in my application above mentioned. A driving pulley section (3 is mounted upon a sleeve 8 arranged about the shaft 2 concentrically therewith but secured to the frame 4.. A driven section 10 is pinned to the shaft 2 for limited movement longitudinallythereof and a coiled spring 12 seated on a collar 14 is arranged between the sections to move them apart. The collar 14 is provided upon its end ad jacent the driving section with a peripheral flange 16 against which one end of tlu spring 1.2 presses and said collar is in engagement with one end of the sleeve 8 so that it cannot exert pressure upon the driving section 6. The driven section 10 may be forced into engagement with the driving section (5 by a crank 18 which is pivotally mounted upon a stud 20 secured to anvarm fixed upon the shaft 2. y

The outer end of the hub of the driven member 10 is beveled as at Qt and is arranged to be engaged by the ends of levers 26 pivoted at 28 upon the arm 22, the arrangement being such thatv by approaching movement of the inner ends of the levers 26 the driven section 10 is forced into engagement with the driving section 6. To this end a cam 30 carried by the crank 18 is arranged between the levers 2G and for engagement with their inner faces in such manner that a slight swinging movement of the crank serves to press the levers into operative engagement with the beveled end of the hub of the driven section to force said section toward the driving section. Pivotal movement of the crank l8 upon the arm 22 is limited by screws 32 which are engaged by a lug Ell formed upon the crank.

It will be seen that in the clutch mechanism shown the driving section 3 is sustained independently of the shaft 2 and in the inoperative position of the parts is free from frictional engagement with thcdrivcn section 10. This is of advantage in that it renders the control of the driving mechanism more sensitive and also because it insures that when the machine is idle the shaft 2 and the crank mounted thereon will not be in rotation.

In the useof-the clutch mechanism shown the operator turns the crank in the direction that the driving section (5 is being rotated so that the driven section is forced into e3:-

to be held in operative engagement.

gagement with the driving section. driven section rotates the operator turns the crank and presses the same-sufficiently forward to cause the two sections of the clutch By moving the crank at a slower rate than the speed of the driven section the two sections may be caused to move apart under the influence of the spring 16 so that the operator can conveniently render the clutch mechanism inoperative. It will be seen therefore, in b a machine having a clutch mechanism sudh as that shown, that the operator has a convenient means for regulating the oper ation of the feeding mechanism so that the advance movei'nent of the sole may be made as slow as desired in operating upon the toe.

It will be understood that the present invention is not limit-ed for use with machines for operating upon soles, as clutch mechanisms einbodying the invention may be employed with advantage in other kinds of machines withoutdcparting from the scope of the invention.

Having described my invention, claim as new and desire to secure by Patent of the United States is:

1. In a machine of the class described, the combination with a shaft for transmitting motion to feedinghiechanism, of a driving pulley mounted concentrically with theshaft and supported independently at said-shaft, a friction member' secured to the shaft, a crank arranged for manipulation by the operator supported upon the shaft for a limited amount of. movement relatively to the shaft about an 'axis extending longitudinally of said shaft, and means actuated by said crank for pressing said member and pulley into frictional engagement.

2. In a machine ofthe class described, the

what I Letters combination with a shaft adapted to transmit motion to feeding mechanism, of a driving pulley mounted concentrically with the shaft, a friction member secured to the shaft, a coiled spring arranged about theshaft for separating saidpulley and friction member and supported independently of said pulley i i l As the in position to be unaffected by the rotation of said pulley, a crank arranged for mampu lation by the operator supported upon the shaft for a limited amount of movement relatively to tls: shaft about an axis extending longitudinally of the shaft, and means actuated by said crank for pressing said member and the pulley into frictional engagement. q

3. In a machine of the class described, the combination with a shaft having operative engagement with feeding mechanism, of a driving pulley mounted concentrically with the shaft, a friction member secured to the shaft, an arm fixed to the shaft, cam levers pivoted upon the arm and provided with wedging surfaces arranged to have engage ment with different portions of the hub of said friction member, and a crank pivoted upon the arm and provided with a cam-member arranged between said levers for simultaneously forcing them into engagement with said hub.

4. In a machine of the class described, the

combination with a shaft adapted to transmit motion to feeding mechanism, a driving pulley mounted concentrically with the shaft and supported independently of said shaft, a friction member secured to the shaft, a spring arranged about the shaft for separating said pulley and friction member an arranged iiulependentlv of said pulley in" position to be unaffected by the rotation of the idle and a crank'arran 'ed for main )u- 23 lation by the operator supported upon the shaft for a limited amount of movement 'relati'vely to the shaft about an axis extending longitudinally of the shaft, and means actuated by said crank for pressing said member and the pulley into frictional engagement.

In testimony whereof I have-signe name to this specification in the presence of two subscribing witnesses.

HENRY w. WINTER.

Witnesses:

Cnnsrnn E, Itoenns, Lnonano M. Jonnson. 

